MD5: Removed null pointer subtraction (#171)
MD5: Removed null pointer subtraction (#171)

Credits to Maxim Sharabayko who fixed it in the following PR in one of
his repositories: https://github.com/Haivision/srt/pull/2392

Co-authored-by: Ray Burgemeestre <3edec3543111f1ab5b95190f533fbc2c03e23ca1@nvidia.com>
mattgodbolt/seasocks,mattgodbolt/seasocks,mattgodbolt/seasocks,mattgodbolt/seasocks,offa/seasocks,offa/seasocks,offa/seasocks,offa/seasocks,mattgodbolt/seasocks,offa/seasocks,mattgodbolt/seasocks,offa/seasocks